Pinned post for Q&A :)

It needs to be pointy , pointy is scary... ~ Admiral-Gerneral Aladeen

If my early math teachers had told me geometry was the key to artillery I'd have mastered it straighaway......

One of the close calls I had was when a defective 5" 38 HE round exploded right outside the gun mount during a training exercise.  It left a sizeable dent on the frontal armor right where I was stationed.  Some of the shrapnel flew back onto the bridge, too.  
Yes, I have tinnitus.

My answer would be "a significant emotional event"

Last time I was this early, the Kriegsmarine was still convinced that more capital ships was the right answer

Hail to we nerds of Naval trivia that find videos like this interesting.  Because my wife walked in while I was enjoying a ginger ale and some chips while enjoying this video and she laughed, gave me a hug and left, knowing that I'm again cramming knowledge into my head that will serve no useful purpose if a zombie apocalypse ever breaks out.

Perhaps a little unrelated, but the glass marble example mentioned, triggered an old funny memory from school.
The school I attended has four floors, and in one location there are stairs with an open volume through all floors
down to the basement floor. Thus five floors. The floor at the bottom is smooth stoned slabs, very tuff and hard.
So... one day walking the stairs, holding a small billiard ball that I inexplicably had found somewhere, an intrusive
thought raised it's stupid head. I could not resist, so from the top of the stairs, looking down an estimated 18 m(?),
I threw the billiard ball, balancing force with control, as hard as I could down towards the bottom of the stairs.
I expected the ball to shatter, but to my surprise, the ball bounced back high enough for my friend standing one
floor below me to catch it. Examining the ball, there was little to see, just a small mark of contact. Looking at the
stone floor... there was a somewhat larger mark of contact. The slab was cracked to each corner, with a very
visible crater at the convergance of those cracks, but it had not shattered either. Physics is fun, in theory and
practice. We the started to calculate the G-forces involved, but decided to go talk to the girls walking by instead.
That is at least how I choose to remember the end of the story... 🙂

Ive never been subject to naval gunfire, but I imagine being hit with a capital ships main battery would be very much consistent with "A significant emotional event"

When at boarding school in the ‘60’s, the school was managed as a naval ship and many of the teachers were ex-RN.  One particular teacher had been the commander on a destroyer, and was responsible for fire and damage control. If you wanted an easy lesson, all you had to do was ask him about how badly his ship was damaged in WWII, and he would give you precise details of each and every shell hit.  Fascinating.

Amazing thanks, my grandfather was an engineer at chatham docks, sadly died trying to save the life of a friend who inadvertently fell into the water just after they left the security gate on shore leave! The friend could not swim so my grandad dived in and its believed he struck his head fatally. Still have the plaque given to my grandmother by the King.

Aw hell yeah, engineering Drach is one of my very favorite varieties of Drach

I don't know, getting hit by shells seems a bit life threatening

Yes WW1 comparison to WW2 would be interesting.  What was learned and what was dropped

As a mechanical structural engineer, this is an excellent explanation for the phenomenon and their effects in shell impacts, shockwave, compression and what their stresses want to do to the shell. Putting down this basis is very good for the explanations with armored caps.

Also, the sacrificial role of the AP cap, made to take the worst of stresses of the impact. A sacrificial penetrator made to push the strongest part of the armor out of the way of the shell, and get itself out of the way by shattering. I never thought a shattering object could be used to absorb energy, but I guess what actually happens is this does the inverse, concentrate energy inwards to create damage.

Very interesting video !
Being a non native English speaker, thank you for speaking so intelligibly. You are very easy to understand contrary to a lot of other anglophone youtubers.

Those poor young blokes behind the armour.

Yes more examples and assesments of shell impacts. All of them that you have, can be a new series

I would like to see another video on this subject: WW2 incidents, and maybe something on cruiser-level armor and guns.

This must be the continuation to : Stop poking holes on my ships.. and I'm all for it!